This power control from a 1968 Motorola manual shows how to use a contemporary diac as a zero-crossing detector. The SCR is of the type depending on the power of the load.
For the NOR or no-OR function (negative of the OR function) we take the previous configuration (CB15067E)...
We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as...
We find this circuit in an American 80's documentation. It makes use of IC sensor which is mounted...